This is an English variation of a Welsh lullaby…

Sleep, My Child and Peace Attend Thee - English Children's Songs - England - Mama Lisa's World: Children's Songs and Rhymes from Around the World  - Intro Image

Notes

There are versions that have the 3rd line as, "Guardian angels God will send thee".

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Sheet Music

Sheet Music - Sleep, My Child and Peace Attend Thee

Thanks and Acknowledgements

Many thanks to Monique Palomares for the midi music!

Thanks to Gracie Gralike for the wonderful illustration!